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2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)最新文献

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A Reflect-Transmit Array with Full-Space Independent Beamforming Capability 具有全空间独立波束形成能力的反射-发射阵列
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/ISAPE54070.2021.9753555
Hang Yu, Jianxun Su, Zengrui Li
{"title":"A Reflect-Transmit Array with Full-Space Independent Beamforming Capability","authors":"Hang Yu, Jianxun Su, Zengrui Li","doi":"10.1109/ISAPE54070.2021.9753555","DOIUrl":"https://doi.org/10.1109/ISAPE54070.2021.9753555","url":null,"abstract":"A novel reflect-transmit array (RTA) is presented that can enable independent beam steering in full space. The proposed unit cell consists of a metallic Jerusalem cross resonator, which locates between a pair of orthogonally oriented subwavelength metal gratings. By adjusting the length of the metal resonator, 2-bit codes (including '1-bit reflection and transmission phases) are generated. Next, the entire 25x25-element array fed by a pyramidal horn antenna, which is subjected to the quick response (QR) code, is divided into transmission and reflection distribution. The entire structure of the array is arranged in accordance with the transmission beam toward θ0= 0° and the reflection beam toward θ0 = 160°. The simulated results demonstrate the full-space independent beamforming capability.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116313381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on the Scattering Coefficients of the Cement Surface at 28GHz 水泥表面28GHz散射系数研究
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/ISAPE54070.2021.9752776
C. Hou, Zhensen Wu, Xiangming Guo, Hui Zhang, Ju Wang
{"title":"Study on the Scattering Coefficients of the Cement Surface at 28GHz","authors":"C. Hou, Zhensen Wu, Xiangming Guo, Hui Zhang, Ju Wang","doi":"10.1109/ISAPE54070.2021.9752776","DOIUrl":"https://doi.org/10.1109/ISAPE54070.2021.9752776","url":null,"abstract":"The scattering properties of the cement surface play an important role in determining time and angle dispersion of the fifth-generation (5G) mobile communication in urban environment. The 28 GHz scattering distribution of the rough cement wall surface (RCWS) were acquired by the outdoor environment experiment at different incidence angles in this paper. The measurements reveal that the dlstributions of the scattering signals don't conform to the Lambert distribution used in the conventional ray tracing. The scattering coefficient reaches up to the maximum near the specular direction compared with the Lambert distribution, Moreover the other direction is less than the specular one. The scattering coefficients can be applied to simulate the signal propagation in urban environments to improve the reliability of the system.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125491311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on Roll-Off Characteristics at Upper Cutoff Frequency of SSPP Transmission Lines SSPP输电线路上截止频率滚降特性研究
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/isape54070.2021.9752881
Zehao Zheng, M. Tang, Junfa Mao
{"title":"Study on Roll-Off Characteristics at Upper Cutoff Frequency of SSPP Transmission Lines","authors":"Zehao Zheng, M. Tang, Junfa Mao","doi":"10.1109/isape54070.2021.9752881","DOIUrl":"https://doi.org/10.1109/isape54070.2021.9752881","url":null,"abstract":"In this paper, the roll-off characteristic at the upper cutoff frequency of spoof surface plasmon polariton (SSPP) transmission lines with linear tapered transitions is studied. The SSPP structure with different number of units are investigated using a cascaded equivalent circuit model. It is found that the roll-off rate reaches its maximum value at a specified number of units. The variation of the roll-off rate with different geometric parameters is also discussed.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"C-23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126474721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tianlai Interferometer Array for Dark Energy Radio Detecting and Transient Objects Survey 暗能量射电探测与瞬态天体观测天来干涉仪阵列
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/isape54070.2021.9752952
Fengquan Wu, Jixia Li, S. Zuo, Shijie Sun, Furen Deng, Zijie Yu, Yingfeng Liu, Kaifeng Yu, Y. Cong, Yougang Wang, Xuelei Chen, Santanu Das, J. Marriner, Trevor M. Oxholm, A. Phan, A. Stebbins, P. Timbie, R. Ansari, O. Perdereau, J. Peterson
{"title":"Tianlai Interferometer Array for Dark Energy Radio Detecting and Transient Objects Survey","authors":"Fengquan Wu, Jixia Li, S. Zuo, Shijie Sun, Furen Deng, Zijie Yu, Yingfeng Liu, Kaifeng Yu, Y. Cong, Yougang Wang, Xuelei Chen, Santanu Das, J. Marriner, Trevor M. Oxholm, A. Phan, A. Stebbins, P. Timbie, R. Ansari, O. Perdereau, J. Peterson","doi":"10.1109/isape54070.2021.9752952","DOIUrl":"https://doi.org/10.1109/isape54070.2021.9752952","url":null,"abstract":"The Tianlai project is a dedicated experiment to test key techniques for 21 cm Intensity Mapping of dark energy radio detection over the redshift range z<3. It is comprised of two pathfinder arrays: the cylinder array with three 15m-wide cylindrical antennas oriented in the north-south direction, and the dish array with 16 dishes of 6m aperture. These arrays observe large area of sky by drift scan. Recently fast radio burst (FRB) backends with digital beam forming capability are installed, which could form 16 beams for the dish array and 96 beams for the cylinder array with the time resolution better than 0.2 millisecond. The original correlation backend and the FRB backend will work simultaneously, so that the intensity mapping experiment could be conducted along with FRB search at the same time.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"30 7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127597813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impact of Radio Frequency Interference on GNSS Ionospheric Scintillation Data Analysis 射频干扰对GNSS电离层闪烁数据分析的影响
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/ISAPE54070.2021.9752919
Ya Liao, Yuhua Zou
{"title":"Impact of Radio Frequency Interference on GNSS Ionospheric Scintillation Data Analysis","authors":"Ya Liao, Yuhua Zou","doi":"10.1109/ISAPE54070.2021.9752919","DOIUrl":"https://doi.org/10.1109/ISAPE54070.2021.9752919","url":null,"abstract":"Ionospheric scintillation has seriously adverse impacts on the propagation of GNSS (Global Navigation Satellite System) signals and can cause signals received by GNSS receiver to fade. Therefore, it is important to study the characteristics of the occurrence and variations of GNSS ionospheric scintillation. In the analysis of single-frequency GNSS ionospheric scintillation data, radio frequency interference may be misjudged as amplitude scintillation because radio frequency interference may cause large values of the amplitude scintillation index S4 for the received GNSS signal. In order to minimize the impact of radio frequency interference on GNSS ionospheric scintillation data analysis, ionospheric scintillation measurements of the raw signal power (or carrier-to-noise density ratio) at multiple GNSS frequencies should be used to study the characteristics of the occurrence and variations of GNSS ionospheric scintillation.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133632277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The Analysis Method for the Mechanical Radiator with Converse Magneto-electric Effect 具有逆磁电效应的机械散热器的分析方法
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/isape54070.2021.9753169
Wei Shi, Qiang Zhou, Shuangrui Yu, Bin Liu
{"title":"The Analysis Method for the Mechanical Radiator with Converse Magneto-electric Effect","authors":"Wei Shi, Qiang Zhou, Shuangrui Yu, Bin Liu","doi":"10.1109/isape54070.2021.9753169","DOIUrl":"https://doi.org/10.1109/isape54070.2021.9753169","url":null,"abstract":"The theoretical analysis method for the laminated composites as a VLF radiator is given. The relation between the acoustic wave inside the material and EM wave outside is established. In condition of the typical material parameters given in other published work, the computed equivalent magnetic dipole moment with the method is in substantial agreement with the result from the experiment in preceding work. The calculated near field in the range less than 100 m is given for free space and half space condition. The field intensity decays with r3, and the magnetic flux intensity of more than 10 fT at 100 m can be obtained for both situations. This mechanical radiator has potential applications in near field communications at VLF band or above.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130316863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multipath Component Clustering Based on Improved Self-organizing Feature Map for 5G Millimeter Wave Radio Channels 基于改进自组织特征映射的5G毫米波信道多径分量聚类
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/ISAPE54070.2021.9752910
Lujia Yu, Xiongwen Zhao, Fei Du, Yu Zhang, Zihao Fu, S. Geng
{"title":"Multipath Component Clustering Based on Improved Self-organizing Feature Map for 5G Millimeter Wave Radio Channels","authors":"Lujia Yu, Xiongwen Zhao, Fei Du, Yu Zhang, Zihao Fu, S. Geng","doi":"10.1109/ISAPE54070.2021.9752910","DOIUrl":"https://doi.org/10.1109/ISAPE54070.2021.9752910","url":null,"abstract":"Recently, clustering algorithm has become an important research hotspot, as cluster based wireless channel modeling can reduce the complexity of multiple-input multiple-output (MIMO) channel models. In this work, a clustering algorithm based on maximum-minimum distance algorithm (MMD) assisted Self-organizing Feature Map (SOM) is proposed, namely, MMD-SOM. Specifically, MMD algorithm is used to initialize the weight of the network, which solves the problem of inadequate network training in traditional SOM caused by randomly setting the initial weights. Furthermore, an output layer is added to the network, which gets over that SOM is easy to be over-trained in the unsupervised situation. The performance of the improved algorithm is evaluated based on the measured and simulated channel data, both numerical simulations and experimental clustering results are provided to demonstrate the effectiveness and robustness of the proposed algorithm.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131406841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Pixelated Microwave Sensor for Angular Displacement Detection 用于角位移检测的像素化微波传感器
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/isape54070.2021.9753437
G. Liu, Hui Zhang, Zengrui Li
{"title":"Pixelated Microwave Sensor for Angular Displacement Detection","authors":"G. Liu, Hui Zhang, Zengrui Li","doi":"10.1109/isape54070.2021.9753437","DOIUrl":"https://doi.org/10.1109/isape54070.2021.9753437","url":null,"abstract":"A pixelated sensor based on a complementary split-ring resonator (CSRR) is proposed to measure angular displacemen. The variation of the resonance frequency of S21 with the rotation angle is defined as the sensitivity of the sensor. The angle sensing area is pixelated first, then the sensitivity of the sensor as the fitness function is optimized with the binary particle swarm algorithm (BPSO), and finally the sensor that is more sensitive to angle changes is proposed. The simulation results show that the pixelated angle sensor has higher sensitivity than the rectangular CSRR sensor and the circular CSRR sensor of the same size. The sensitivity of the pixelated angle sensor is 19MHz/degree, while that of the rectangular CSRR sensor and circular CSRR sensor are 1.3MHz/degree and 1.6MHz/degree respectively.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131418544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Beam-pointing Deviation Analysis of the Wide band Phased Array and Array-fed Reflector antenna 宽带相控阵与阵馈反射器天线的波束指向偏差分析
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/isape54070.2021.9753656
Li Wei-Mei, Liu Bo, Niu Xuejie, Liu Heng
{"title":"Beam-pointing Deviation Analysis of the Wide band Phased Array and Array-fed Reflector antenna","authors":"Li Wei-Mei, Liu Bo, Niu Xuejie, Liu Heng","doi":"10.1109/isape54070.2021.9753656","DOIUrl":"https://doi.org/10.1109/isape54070.2021.9753656","url":null,"abstract":"In wide-band phased array and array-fed reflector antenna, the traditional phase-shift method causes beam-pointing deviation versus frequency. The excursion of beam-pointing is analyzed for the wide band phased array and array-fed reflector antenna through simulating using beam forming theory in this paper. The theoretical analysis shows that the beam-pointing drift of the planar phased array in azimuth and elevation are independent of the antenna size, and the beam-pointing drift of the array-fed reflector antenna is not superior than the phased array antenna, but it is much easier to compensate the beam-pointing deviation of array-fed reflector antenna.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132735894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Focusing effect of inhomogeneous plasma on electromagnetic wave 非均匀等离子体对电磁波的聚焦效应
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2021-12-01 DOI: 10.1109/ISAPE54070.2021.9753606
Han Fei, J. Yao, Jianfei Li, C. Yuan
{"title":"Focusing effect of inhomogeneous plasma on electromagnetic wave","authors":"Han Fei, J. Yao, Jianfei Li, C. Yuan","doi":"10.1109/ISAPE54070.2021.9753606","DOIUrl":"https://doi.org/10.1109/ISAPE54070.2021.9753606","url":null,"abstract":"In this paper, the propagation process of electromagnetic wave in plasma with low internal density and high outer layer density is simulated by CST software. The energy distribution of electromagnetic wave is measured by field monitor and it is found that the distribution of plasma can focus electromagnetic wave. With the help of Drude model, this phenomenon is explained. By changing different parameters such as microwave frequency and the form of incident electromagnetic wave (plane wave and wave guide), the properties of focusing effect are investigated. The research of this thesis has reference value for the applications of plasma and electromagnetic wave interaction.","PeriodicalId":287986,"journal":{"name":"2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132864236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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